When it comes to high-temperature applications, certain metals and materials stand out for their ability to withstand extreme heat.
Which Metal Can Withstand High Temperatures? 5 Metals and Materials You Should Know
1. Tungsten: The High-Temperature Champion
Tungsten is one of the most commonly used metals for withstanding high temperatures.
It can handle temperatures up to 2,500 °C (4,532 °F).
Tungsten is preferred for its higher melting point and is used in heating elements and radiation shields in high-temperature furnaces.
2. Molybdenum: The Ductile Option
Molybdenum is another metal that can withstand high temperatures, up to 2,600 °C (4,712 °F).
While it has a slightly lower melting point than tungsten, molybdenum is more ductile and easier to process.
This makes it suitable for applications where its melting point is sufficient.
3. Hybrid Hot Zones: Graphite and Ceramics
In addition to metals, hybrid hot zones in high-temperature furnaces often incorporate graphite and ceramics for thermal insulation.
These materials, when introduced as fibers, provide excellent insulation and lower construction costs, making hybrid hot zones more cost-effective.
4. Nickel-Chromium Alloys: For Lower Temperature Ranges
For lower temperature ranges, alloys such as nickel-chromium (Ni-Cr) and nickel-chromium-iron (Ni-Cr-Fe) are used.
Ni-Cr alloy is suitable for temperatures up to 1,150°C, while Ni-Cr-Fe alloy is recommended for use up to 950°C.
These alloys are chosen for their resistance to oxidation and sufficient strength at elevated temperatures.
5. Zirconia: Durability at Extreme Temperatures
Zirconia is another material noted for its high durability at extreme temperatures, often used in hot blast furnaces where temperatures can exceed 1,500°C.
Its low thermal conductivity and non-reactivity with liquid metal or molten glass make it an excellent choice for metallurgy and glassmaking applications.
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